Required software on the host The software that is required for the host system is necessary for the service to run effectively. Operating system Service pack Required components that must be installed manually Windows Server 2008 Service Pack 1 Microsoft Hotfix KB959476 Service Pack 2 Microsoft Hotfix KB972135 Microsoft Hotfix KB2528357 None Microsoft Hotfix KB975688 Microsoft Hotfix KB2637197 Microsoft Hotfix KB2661794 Microsoft Hotfix KB2528357 Windows Server 2012 None Microsoft Hotfix KB2916993 Microsoft Hotfix KB2929869 Microsoft Hotfix KB2913695 Microsoft Hotfix KB2878635 Microsoft Hotfix KB2894464 Microsoft Hotfix KB2838043 Microsoft Hotfix KB2803748 Microsoft Hotfix KB2770917 Microsoft Hotfix KB976424 Windows Server 2012 R2 None Microsoft Hotfix KB2955164 Microsoft Hotfix KB2919355 Microsoft Hotfix KB976424 Windows Server 2019 None Microsoft Hotfix KB4469342